diff --git a/configure.ac b/configure.ac
index 0951dab..836281f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -22,6 +22,11 @@ AC_SUBST([LIBTOOL_DEPS])
 
 AC_FUNC_FNMATCH
 
+enable_rt_tests="no"
+AC_CHECK_LIB([rt], [clock_gettime], [enable_rt_tests="yes"])
+
+AM_CONDITIONAL([ENABLE_RT_TESTS], [test "x$enable_rt_tests" != "xno"])
+
 AM_GNU_GETTEXT([external])
 AM_GNU_GETTEXT_VERSION([0.18])
 
diff --git a/samples/Makefile.am b/samples/Makefile.am
index a1d7231..7ed5f12 100644
--- a/samples/Makefile.am
+++ b/samples/Makefile.am
@@ -8,7 +8,6 @@ BIN_TESTS = \
 	long-messages \
 	description \
 	other-crashes \
-	with-time \
 	simple
 
 TESTS_ENVIRONMENT = CRITERION_ALWAYS_SUCCEED=1
@@ -17,7 +16,10 @@ check_PROGRAMS := $(BIN_TESTS)
 CFLAGS = -I$(top_srcdir)/include/ -std=c99 -Wall -Wextra -pedantic
 LDADD = -L$(top_srcdir)/ -lcriterion
 
+if ENABLE_RT_TESTS
+BIN_TESTS += with-time
 with_time_LDADD = $(LDADD) -lrt
+endif
 
 SCRIPT_TESTS = tests/tap_test.sh \
                tests/early_exit.sh \